古地理学报 ›› 2003, Vol. 5 ›› Issue (4): 426-438. doi: 10.7605/gdlxb.2003.04.004

• 岩相古地理学及沉积学 • 上一篇    下一篇

黄骅坳陷千米桥地区奥陶系胶结物地层学及其在裂缝研究中的应用

金振奎   张响响   邹元荣   由伟丰   周新科   明海会   

  1. 1-石油大学CNPC油气储层重点研究室 北京昌平  102249
    2-石油大学教育部石油天然气成藏机理重点实验室 北京昌平  102249
    3-中石化石油勘探开发研究院 北京海淀区 100083
  • 出版日期:2003-08-01 发布日期:2003-08-01
  • 作者简介:金振奎,男,1963年出生,1983年毕业于华东石油学院,获学士学位;1987年毕业于加拿大CALGARY大学,获硕士学位;1992年毕业于石油大学(北京),获博士学位;1994年毕业于中国地质科学院,博士后,现为石油大学(北京)教授,从事沉积储层教学与科研。

CEMENT STRATIGRAPHY OF THE ORDOVICIAN AND ITS APPLICATION IN FISSURE STUDY, QIANMIQIAO AREA,HUANGHUA DEPRESSION

Jin Zhenkui    Zhang Xiangxiang    Zou Yuanrong     You Weifeng    Zhou Xinke    Ming Haihui   

  1. 1- CNPC Key Laboratory of Oil & Gas Reservoirs,University of Petroleum,Changping, Beijing 102249
    2- Education Ministry Key Laboratory of Oil & Gas Pools Formation Mechanism, University of
    Petroleum,Changping, Beijing 102249
    3- SINOPEC Institute of Petroleum Exploration and Development,  Beijing 100083
  • Online:2003-08-01 Published:2003-08-01
  • About author:Jin Zhenkui, born in 1963, graduated and obtained BS degree from East China Petroleum Institute in 1983, graduated and obtained MS degree from the University of Calgary, Canada in 1987, graduated and obtained Ph. D degree from University of Petroleum (Beijing) in 1992, and graduated from the Chinese Geological Academy in 1994 as a postdoctor. Now he is a professor of the University of Petroleum, and is engaged in sedimentology and reservoir prediction.

摘要:

在不同时期,由于埋藏深度不同,成岩环境的氧化还原性不同,形成的胶结物的特征也就不同。有些情况下,胶结物期次之间是连续沉淀的,即呈“整合接触”。而有些情况下,两个期次之间曾发生过溶蚀,形成“不整合接触”。有些孔隙和裂缝形成早,其内胶结物的期次齐全,而有些孔隙和裂缝形成晚,就会缺失一些期次。因此,胶结物可以像地层一样进行划分和对比。据此可以分析成岩环境的变化,判断孔隙和裂缝形成的时期等。由于成岩环境的变化常与构造运动有关,因此胶结物地层学的研究可以间接地分析构造运动发生的时期。黄骅坳陷千米桥地区奥陶系碳酸盐岩的裂缝和孔隙中,充填了5期胶结物,每期胶结物阴极发光的特征不同,其中第二期与第三期胶结物之间存在溶蚀不整合。根据胶结物的特征,可划分出5期裂缝,形成于三叠纪、中晚白垩世、古近纪末、新近纪末等。

Abstract:

In different ages, due to difference in burial depth and in oxidation-reduction conditions of diagenetic environments, the cements precipitated are different in character. In some cases, precipitation of cements of different generations is continuous, and the contact between two generations of cements is conformable. But in other cases, precipitation process is once interrupted by dissolution, and the contact between two generations of cements is unconformable. Some pores and fissures form early, and generations of cements in them are many and complete. But some pores and fissures form late, and some generations of cements are missing. Thus, cements can also be divided and correlated like strata. Thereby, change of diagenetic environments can be analyzed, and time of pore and fissure formation can be inferred. As change of diagenetic environments is commonly related with structural movements, time of structural movement can also be inferred through study of cement stratigraphy. In  Ordovician carbonate rocks of the Qianmiqiao area of the Huanghua Depression, pores and fissures are filled with 5 generations of cements. Each generation shows different color of cathodoluminescence. Between the second and third generations of cements there exists dissolution unconformity. Based on characteristics of cements, 5 times of fracturing can be recognized, which occurred in the Triassic, middle-late Cretaceous, end of Paleogene and end of Neogene.